Modding a 5mW Green Laser

[Last One Left]

Hello everyone, im sorry if the title is misleading, but it was the best i could think of...
I recently purchased a 5mW Green laser pen of ebay (i have not recieve it yet though)...i dont know much about green lasers but i do understand that it uses an IR diode and crystals to get the green light (DPSS system) correct me if im wrong..and a 5mW can possibly have a 200mW IR diode..
I know that is hard to construct your own DPSS, so im thinking that if i use the green 5mW as it is and change the IR diode to a more powerful one (like say 1000mW 405nm diode, along with drive), that i can have a more powerful burning green laser..can someone advise me weather this assumtion is true and if it can but done? any help would be greatly appreciated...

 

[Meatball]

This would not work. I don't know if Nd:YVO4 or Nd:YAG will absorb 405nm light, but regardless, changing the system to a more powerful diode will not give you any kind of healthy boost. Considering that a good green pointer will be about 20% efficient, a typical 5mw pointer will use a 30mw IR diode to lase the crystals.

So why won't it work? Because those crystals were designed/manufactured for 5mw output powers. Pumping those crystals with more light make the system very unstable in terms of power and temperature. You would need larger, high power specific crystals to get more power from a bigger IR diode. Do a little reading here, and you'll get the idea.

Sam's Laser FAQ - Preface, Introduction, What is a Laser?, Safety

Hope this helps.

 

[Last One Left]

Thank you alot, i totally understand..so is there anyway of building my own green laser using an IR diode? cause they are cheap IR diodes i can get on ebay, and it would be cool to build my own..Or would it be a very difficult task?

 

[KiLLrB]

what diodes are you looking at on ebay?

 

[Last One Left]

I came across a 1000mW 405nm IR diode on ebay, why do u ask?

 

[kingdave2357]

I came across a 1000mW 405nm IR diode on ebay, why do u ask?

:crackup::crackup: ROFL!!! Thats why he asked.... im sure thats one hell of an IR diode:crackup:

The IR you want is 808nm... 405nm is violet

 

[Last One Left]

:crackup::crackup: ROFL!!! Thats why he asked.... im sure thats one hell of an IR diode:crackup:

The IR you want is 808nm... 405nm is violet

Hey man careful you pee yourself, i made a mistake, it wasnt 405nm, its 808nm, here it is...
IR Diode

 

[Bandanna]

I wouldn't even trust buying from there if they are advertising an 808nm as a blu-ray diode...

 

[kingdave2357]

Hey man careful you pee yourself, i made a mistake, it wasnt 405nm, its 808nm, here it is...
IR Diode

Thats just as bad, dude, the link as advertised as an 808nm burning BLU-RAY(405nm) IR diode....
I wasnt cracking at you or on you, just the moronic scammers on ebay

 

[randomlugia]

There is one trusted diode seller on Ebay: eBay Seller: snoctony: Business Industrial, Sporting Goods items on eBay.com

Also, even if it didn't overheat, the weak crystals would crack/burn almost instantly.